com.rapidminer.tools.math.function.window
Class WindowFunction

java.lang.Object
  com.rapidminer.tools.math.function.window.WindowFunction

Direct Known Subclasses:

BartlettWindowFunction, BlackmanHarrisWindowFunction, BlackmanWindowFunction, GaussianWindowFunction, HammingWindowFunction, HannWindowFunction, RectangularWindowFunction, TriangularWindowFunction

public abstract class WindowFunction
extends java.lang.Object

A window function applies weights to the data points in a series window. Left, right or center justification allows to adjust which data points should get the highest weights. In case of center justification the window function is symmetric.

Author:

Tobias Malbrecht

Field Summary

static int	BARTLETT
static int	BLACKMAN
static int	BLACKMAN_HARRIS
static java.lang.String[]	FUNCTION_NAMES
static java.lang.Class[]	FUNCTIONS
static int	GAUSSIAN
static int	HAMMING
static int	HANN
static int	JUSTIFY_CENTER
static int	JUSTIFY_LEFT
static int	JUSTIFY_RIGHT
static int	RECTANGULAR
static int	TRIANGULAR

Constructor Summary

WindowFunction(int width)

WindowFunction(int width, int justification)

Method Summary

static WindowFunction	createWindowFunction(int typeIndex, int width)
static WindowFunction	createWindowFunction(int typeIndex, int justification, int width)
static WindowFunction	createWindowFunction(java.lang.String functionName, int width)
static WindowFunction	createWindowFunction(java.lang.String functionName, int justification, int width)
double	getValue(int n)
protected abstract double	getValue(int width, int n)
double[]	getWeights()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FUNCTIONS

public static final java.lang.Class[] FUNCTIONS

FUNCTION_NAMES

public static final java.lang.String[] FUNCTION_NAMES

RECTANGULAR

public static final int RECTANGULAR

See Also:

Constant Field Values

TRIANGULAR

public static final int TRIANGULAR

See Also:

Constant Field Values

GAUSSIAN

public static final int GAUSSIAN

See Also:

Constant Field Values

HANN

public static final int HANN

See Also:

Constant Field Values

HAMMING

public static final int HAMMING

See Also:

Constant Field Values

BLACKMAN

public static final int BLACKMAN

See Also:

Constant Field Values

BLACKMAN_HARRIS

public static final int BLACKMAN_HARRIS

See Also:

Constant Field Values

BARTLETT

public static final int BARTLETT

See Also:

Constant Field Values

JUSTIFY_CENTER

public static final int JUSTIFY_CENTER

See Also:

Constant Field Values

JUSTIFY_LEFT

public static final int JUSTIFY_LEFT

See Also:

Constant Field Values

JUSTIFY_RIGHT

public static final int JUSTIFY_RIGHT

See Also:

Constant Field Values

Constructor Detail

WindowFunction

public WindowFunction(int width)

WindowFunction

public WindowFunction(int width,
                      int justification)

Method Detail

createWindowFunction

public static WindowFunction createWindowFunction(java.lang.String functionName,
                                                  int justification,
                                                  int width)
                                           throws java.lang.InstantiationException,
                                                  java.lang.IllegalAccessException,
                                                  java.lang.ClassNotFoundException,
                                                  java.lang.NoSuchMethodException,
                                                  java.lang.reflect.InvocationTargetException

Throws:

java.lang.InstantiationException

java.lang.IllegalAccessException

java.lang.ClassNotFoundException

java.lang.NoSuchMethodException

java.lang.reflect.InvocationTargetException

createWindowFunction

public static WindowFunction createWindowFunction(java.lang.String functionName,
                                                  int width)
                                           throws java.lang.InstantiationException,
                                                  java.lang.IllegalAccessException,
                                                  java.lang.ClassNotFoundException,
                                                  java.lang.NoSuchMethodException,
                                                  java.lang.reflect.InvocationTargetException

Throws:

java.lang.InstantiationException

java.lang.IllegalAccessException

java.lang.ClassNotFoundException

java.lang.NoSuchMethodException

java.lang.reflect.InvocationTargetException

createWindowFunction

public static WindowFunction createWindowFunction(int typeIndex,
                                                  int justification,
                                                  int width)
                                           throws java.lang.InstantiationException,
                                                  java.lang.IllegalAccessException,
                                                  java.lang.NoSuchMethodException,
                                                  java.lang.reflect.InvocationTargetException

Throws:

java.lang.InstantiationException

java.lang.IllegalAccessException

java.lang.NoSuchMethodException

java.lang.reflect.InvocationTargetException

createWindowFunction

public static WindowFunction createWindowFunction(int typeIndex,
                                                  int width)
                                           throws java.lang.InstantiationException,
                                                  java.lang.IllegalAccessException,
                                                  java.lang.NoSuchMethodException,
                                                  java.lang.reflect.InvocationTargetException

Throws:

java.lang.InstantiationException

java.lang.IllegalAccessException

java.lang.NoSuchMethodException

java.lang.reflect.InvocationTargetException

getWeights

public double[] getWeights()

getValue

protected abstract double getValue(int width,
                                   int n)

getValue

public double getValue(int n)